I've had plenty.

One of which was last season I watched a bear slowly walk out along a bench about 80 yards away, hit my scent trail where I walked in (I wasn't as careful about scent control then) made 90 degree turn straight up the hill toward my stand. He reaches the bottom, and by now I'm thinking "don't you do it, don't even think about it." Sure enough, he jumps up and plops his front claws into the tree to begin climbing (do I smell like a tasty cake?). I yelled (still somewhat quietly, afterall, I didn't want to thoroughly ruin my hunting), and he took off.

I've also had cats walk by my stand randomly. That's always strange.

Another funny thing I saw one time as I was climbing my stand, a small yearling came bolting through this real thick undergrowth (still don't know what spooked it to this day as it was running TOWARD me). Anyways, it gets to this downed oak (really good size, about 24" diameter). It's actually resting about 3-4 feet off the ground, so the deer goes to jump it and sure enough it's legs get taken out and it does a face plant on the other side lol I actually started laughing out loud, but she never knew I was there as she got right up and barrelled on off.